♻️ Restructure: Move Astro to repository root

BREAKING CHANGE: Astro project is now at repository root
- Removed dealplustech-astro subdirectory
- Moved all Astro files to root
- Updated PostCSS config to .cjs
- Removed old Next.js files

✅ 11 pages built successfully
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✅ Privacy/Terms links in footer
✅ Ready for Easypanel deployment (no root dir needed)

Migration path:
- Old structure: /dealplustech-astro/
- New structure: / (root)

dealplustech-astro/node_modules/mdast-util-to-markdown/lib/handle/list-item.js

@@ -1,62 +0,0 @@
-/**
- * @import {Info, Map, State} from 'mdast-util-to-markdown'
- * @import {ListItem, Parents} from 'mdast'
- */
-
-import {checkBullet} from '../util/check-bullet.js'
-import {checkListItemIndent} from '../util/check-list-item-indent.js'
-
-/**
- * @param {ListItem} node
- * @param {Parents | undefined} parent
- * @param {State} state
- * @param {Info} info
- * @returns {string}
- */
-export function listItem(node, parent, state, info) {
-  const listItemIndent = checkListItemIndent(state)
-  let bullet = state.bulletCurrent || checkBullet(state)
-
-  // Add the marker value for ordered lists.
-  if (parent && parent.type === 'list' && parent.ordered) {
-    bullet =
-      (typeof parent.start === 'number' && parent.start > -1
-        ? parent.start
-        : 1) +
-      (state.options.incrementListMarker === false
-        ? 0
-        : parent.children.indexOf(node)) +
-      bullet
-  }
-
-  let size = bullet.length + 1
-
-  if (
-    listItemIndent === 'tab' ||
-    (listItemIndent === 'mixed' &&
-      ((parent && parent.type === 'list' && parent.spread) || node.spread))
-  ) {
-    size = Math.ceil(size / 4) * 4
-  }
-
-  const tracker = state.createTracker(info)
-  tracker.move(bullet + ' '.repeat(size - bullet.length))
-  tracker.shift(size)
-  const exit = state.enter('listItem')
-  const value = state.indentLines(
-    state.containerFlow(node, tracker.current()),
-    map
-  )
-  exit()
-
-  return value
-
-  /** @type {Map} */
-  function map(line, index, blank) {
-    if (index) {
-      return (blank ? '' : ' '.repeat(size)) + line
-    }
-
-    return (blank ? bullet : bullet + ' '.repeat(size - bullet.length)) + line
-  }
-}